TSG-RAN Working Group 2 meeting #62
`Kansas City, USA, May 5 – 9, 2008
`
`R2-082800
`
`Agenda Item:
`Source:
`Title:
`
`3
`
`ETSI MCC
`
`Report of 3GPP TSG RAN WG2 meeting #61bis,
`
`Shenzhen, China, March 31 – April 4, 2008
`
`Document for:
`
`Approval
`
`Report of 3GPP TSG RAN WG2 meeting #61bis
`
`held in Shenzhen, China
`March 31 – April 4, 2008
`
`ETSI Mobile Competence Centre (MCC)
`
`April 7th, 2008
`
`SAMSUNG 1034-0001
`
`

`
`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`3GPP
`
`Postal address
`
`3GPP support office address
`650 Route des Lucioles - Sophia Antipolis
`Valbonne - FRANCE
`Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
`
`Internet
`http://www.3gpp.org
`
`© 2008, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
`All rights reserved.
`
`Page 2 of 135
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`SAMSUNG 1034-0002
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`

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`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`Contents
`
`Organisation of the meeting................................................................................................................................6
`Statistics..............................................................................................................................................................6
`1
`Opening of the meeting............................................................................................................................7
`1.1
`Call for IPR ........................................................................................................................................................7
`2
`Approval of the agenda ............................................................................................................................8
`3
`Minutes of the previous meeting/reporting from other meetings.............................................................8
`4
`LTE General.............................................................................................................................................9
`4.1
`Incoming LS to LTE...........................................................................................................................................9
`4.2
`Stage-2 status....................................................................................................................................................14
`4.3
`Identified issues................................................................................................................................................14
`4.3.1
`Multi-layer RACH modelling (including Msg3/4 failures) ........................................................................14
`4.3.2
`Handover/Reconfiguration failure handling................................................................................................17
`4.3.3
`Use of PDCP for RE_ESTABLISHMENT message ..................................................................................22
`4.3.4
`Security.......................................................................................................................................................23
`4.4
`L1/2 control in RRC .........................................................................................................................................25
`4.4.1
`General........................................................................................................................................................25
`4.4.2
`L1................................................................................................................................................................25
`4.4.3
`MAC ...........................................................................................................................................................26
`4.4.4
`RLC.............................................................................................................................................................27
`4.4.5
`PDCP ..........................................................................................................................................................27
`4.5
`Other (unicast)..................................................................................................................................................27
`4.6
`Broadcast services ............................................................................................................................................29
`4.6.1
`MBMS ........................................................................................................................................................29
`4.6.2
`ETWS support in Rel-8...............................................................................................................................30
`4.7
`Home-(e)NB.....................................................................................................................................................30
`4.7.1
`Review of SP-080188 (Home-(e)NB requirements)...................................................................................30
`4.7.2
`Home-eNB handling (LTE-only)................................................................................................................31
`4.8
`UE specific RRM information at handover ......................................................................................................32
`4.9
`SON (Self Optimising Networks).....................................................................................................................33
`4.9.1
`Radio protocol extensions...........................................................................................................................33
`4.9.2
`Standardised eNB measurements................................................................................................................33
`4.10
`Inter-RAT mobility UMTS->LTE....................................................................................................................33
`5
`UTRA/UTRAN Long Term Evolution Stage 3......................................................................................36
`5.1
`User plane.........................................................................................................................................................36
`5.2
`Control plane ....................................................................................................................................................36
`6
`UTRA/UTRAN ......................................................................................................................................36
`6.0
`Open issues from last meeting..........................................................................................................................36
`6.1
`Incoming LSs on UTRA (all releases)..............................................................................................................36
`6.2
`Release 6 corrections (and corrections to earlier releases) ...............................................................................37
`6.3
`Release 7 corrections........................................................................................................................................38
`6.3.1
`Enhanced CELL_FACH state in FDD........................................................................................................38
`6.3.2
`Improved L2 support for high data rates.....................................................................................................38
`6.3.3
`CPC.............................................................................................................................................................39
`6.3.4
`MIMO .........................................................................................................................................................39
`6.3.5
`16 QAM UL................................................................................................................................................39
`6.3.6
`64 QAM DL................................................................................................................................................39
`6.3.7
`MBMS Physical layer Enhancements.........................................................................................................40
`6.3.8
`GNSS in UTRAN .......................................................................................................................................40
`6.3.9
`1.28 Mcps TDD Enhanced Uplink..............................................................................................................40
`6.3.10
`7.68 Mcps TDD ..........................................................................................................................................42
`6.3.11
`3.84/7.68 Mcps TDD Enhanced Uplink......................................................................................................42
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`Page 3 of 135
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`

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`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`TEI7 ............................................................................................................................................................43
`6.3.12
`Release 8...........................................................................................................................................................44
`6.4
`Improved L2 for uplink...............................................................................................................................44
`6.4.1
`CS voice service over HSPA ......................................................................................................................46
`6.4.2
`Enhanced Uplink for CELL_FACH State in FDD......................................................................................47
`6.4.3
`Enhanced UE DRX .....................................................................................................................................53
`6.4.4
`Enhanced CELL_FACH state in 1.28 Mcps TDD......................................................................................54
`6.4.5
`Mobility between UMTS and LTE .............................................................................................................56
`6.4.6
`HSPA VoIP to WCDMA/GSM CS continuity ...........................................................................................56
`6.4.7
`HS-DSCH Serving Cell Change Enhancements .........................................................................................57
`6.4.8
`Support of UTRA HNB ..............................................................................................................................59
`6.4.9
`WIs / SIs under the reasonability of other working groups.........................................................................60
`6.4.10
`TEI8 ............................................................................................................................................................61
`6.4.11
`Outgoing LS and email discussions for UTRA/UTRAN .................................................................................62
`6.5
`Left-overs ...............................................................................................................................................63
`7
`LTE Control Plane session ...............................................................................................................................63
`7.1
`LTE User plane session ....................................................................................................................................63
`7.2
`Liaison and output to other groups.........................................................................................................64
`8
`Any other business .................................................................................................................................67
`9
`Closing of the meeting ...........................................................................................................................67
`10
`Annex A:
`List of participants................................................................................................................68
`Annex B:
`List of Tdocs ..........................................................................................................................68
`Annex C:
`Incoming liaison statements for TSG RAN WG2 #61bis ..................................................68
`Annex D:
`Outgoing liaison statements of TSG RAN WG2 #61bis ....................................................75
`Annex E:
`List of endorsed CRs from TSG RAN WG2 #61bis...........................................................78
`Annex F:
`Report of LTE user plane session (AI 5.1)..........................................................................83
`5.1
`User plane.........................................................................................................................................................83
`5.1.1
`MAC (36.321).............................................................................................................................................83
`5.1.1.1
`Status.....................................................................................................................................................83
`5.1.1.2
`Dynamic scheduling..............................................................................................................................84
`5.1.1.3
`DRX handling .......................................................................................................................................86
`5.1.1.4
`QoS........................................................................................................................................................90
`5.1.1.5
`UL Information for scheduler................................................................................................................92
`5.1.1.6
`Random Access procedure ....................................................................................................................95
`5.1.1.7
`MAC PDU format ...............................................................................................................................100
`5.1.1.8
`Semi-persistent scheduling..................................................................................................................101
`5.1.1.9
`RRC configurable parameters .............................................................................................................103
`5.1.1.10
`Other (unicast).....................................................................................................................................103
`5.1.2
`RLC (36.322)............................................................................................................................................103
`5.1.2.1
`Status...................................................................................................................................................103
`5.1.2.2
`RLC header formats ............................................................................................................................104
`5.1.2.3
`RLC-UM .............................................................................................................................................104
`5.1.2.4
`RLC-AM .............................................................................................................................................104
`5.1.2.5
`Segmentation and concatenation .........................................................................................................107
`5.1.2.6
`RRC configurable parameters .............................................................................................................107
`5.1.2.7
`Other (unicast).....................................................................................................................................107
`5.1.3
`PDCP (36.323)..........................................................................................................................................109
`5.1.3.1
`Status...................................................................................................................................................109
`5.1.3.2
`Lossless handovers..............................................................................................................................109
`5.1.3.3
`Other (unicast).....................................................................................................................................111
`5.1.4
`UE capabilities (36.306) ...........................................................................................................................112
`5.1.4.1
`Status...................................................................................................................................................112
`5.1.4.2
`L2 buffer size ......................................................................................................................................112
`5.1.4.3
`Other....................................................................................................................................................113
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`Page 4 of 135
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`SAMSUNG 1034-0004
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`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`Model of the physical layer (36.302) ........................................................................................................114
`5.1.5
`Status...................................................................................................................................................114
`5.1.5.1
`Other....................................................................................................................................................114
`5.1.5.2
`Report of LTE control plane session (AI 5.2)...................................................................115
`Annex G:
`5.2
`Control plane ..................................................................................................................................................115
`5.2.1
`RRC (36.331)............................................................................................................................................115
`5.2.1.1
`Status...................................................................................................................................................115
`5.2.1.2
`Connection control ..............................................................................................................................115
`5.2.1.3
`Measurements .....................................................................................................................................120
`5.2.1.4
`Inter-RAT Mobility.............................................................................................................................122
`5.2.1.5
`System information broadcast .............................................................................................................123
`5.2.1.6
`Other (unicast).....................................................................................................................................127
`5.2.1.7
`PDU contents details ...........................................................................................................................128
`5.2.1.8
`Methodology .......................................................................................................................................129
`5.2.2
`Cell selection & re-selection (36.304) ......................................................................................................129
`5.2.2.1
`Status...................................................................................................................................................129
`5.2.2.2
`Cell reselection....................................................................................................................................129
`5.2.2.3
`Paging..................................................................................................................................................130
`5.2.2.4
`Speed Dependant Cell Reselection......................................................................................................130
`5.2.2.5
`Other....................................................................................................................................................130
`Annex H:
`RAN WG2 meeting #61bis post processing ......................................................................132
`Email discussions/approvals............................................................................................................................................132
`Annex I:
`History..................................................................................................................................135
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`Page 5 of 135
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`SAMSUNG 1034-0005
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`
`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`Organisation of the meeting
`Meeting:
`3GPP TSG RAN WG2 #61bis
`Meeting location:
`Shenzhen, China
`Duration:
`Monday 31.03.2008 - Friday 04.04.2008
`Host:
`ZTE Corporation
`TSG RAN WG2 Chairman:
`Gert-Jan van Lieshout (Samsung) email: Gert.vanLieshout@samsung.com
`TSG RAN WG2 Vice chairman: Richard Burbidge (Motorola)
`email: Richard.Burbidge@motorola.com
`TSG RAN WG2 Vice chairman:
`Patrick Fischer (LG)
`email: PFischer@lge.com
`TSG RAN WG2 Secretary:
`Joern Krause (ETSI MCC)
`email: Joern.Krause@etsi.org
`Email reflector:
`3GPP_TSG_RAN_WG2@LIST.ETSI.ORG
`Technical documents:
`ftp://ftp.3gpp.org/tsg_ran/WG2_RL2/TSGR2_61bis/Docs
`Ad hocs:
`Parallel ad hocs are held (see agenda item 2) on
`- LTE user plane (agenda item 5.1, Wed-Thu): chaired by Gert-Jan van Lieshout
`- LTE control plane (agenda item 5.2, Tue-Thu): chaired by Richard Burbidge
`- UTRA/UTRAN (agenda item 6, Mon-Wed): chaired by Patrick Fischer
`No joint ad hocs with other WGs were held.
`TSG RAN WG2 #62,
`04.05. - 09.05.2008 Kansas City, USA
`TSG RAN #40,
`27.05. - 30.05.2008 Prague, Czech Republic
`
`next meetings:
`
`Statistics
`TSG RAN WG2 #61bis was held 3 weeks after TSG RAN #39.
`
`
`
`
`
`
`
`161 participants
`651 Tdocs allocated with actual 606 available contributions
`48 incoming liaison statements
`18 outgoing liaison statements (6 related to UTRA, 12 related to LTE; 3 agreed by email after RAN2 #61bis)
`90 endorsed CRs from RAN2 #61bis which will be resubmitted to RAN2 #62 for final agreement:
`0 CRs for Rel.99
`
`1 CR for Rel.4
`
`1 CR for Rel.5
`
`3 CRs for Rel.6
`
`31 CRs for Rel.7
`
`54 CRs for Rel.8 (42 for UTRA Rel.8 and 12 for E-UTRA/LTE)
`
`
`Note: The sequence in which the different topics appear in this report is related to the agenda of the meeting. However,
`the Tdocs do not necessarily appear in the sequence as they were treated in the meeting.
`
`Page 6 of 135
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`SAMSUNG 1034-0006
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`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`Opening of the meeting
`1
`TSG RAN WG2 chairman Gert-Jan van Lieshout (Samsung) opened the meeting RAN WG2 #61bis on Monday
`morning 31.03.2008 at 09:00 o'clock.
`
`On behalf of the host (ZTE Corporation) Zhisong Zuo welcomed the delegates to Shenzhen and explained
`organisational issues.
`
`RAN WG2 meeting rooms:
`
`Main RAN2 room: Espana 1, for about 200 participants, Mon-Fri
`
`First ad hoc room: Madrid 5: for about 70 people, Mon-Thu
`
`2nd ad hoc room: Madrid 8: for about 50 people, Tue-Wed
`
`Other RAN WGs:
`*: ad hoc rooms
`
`Same floor (RAN1: Espana 2 & Madrid 3*, RAN3: Madrid 2, RAN4: Barcelona & Madrid 1*).
`
`Call for IPR
`1.1
`Gert-Jan van Lieshout (TSG RAN WG2 chairman) made the following call for IPRs and reminded the delegates of their
`obligations with respect to IPRs:
`The attention of the delegates of this Working Group is drawn to the fact that 3GPP
`Individual Members have the obligation under the IPR Policies of their respective
`Organizational Partners to inform their respective Organizational Partners of
`Essential IPRs they become aware of.
`The delegates were asked to take note that they were hereby invited:
`
`
`
`
`
`to investigate whether their organization or any other organization owns IPRs
`which were, or were likely to become Essential in respect of the work of the
`work of 3GPP.
`to notify their respective Organizational Partners of all potential IPRs, e.g., for
`ETSI, by means of the IPR Statement and the Licensing declaration forms
`(http://webapp.etsi.org/Ipr/).
`
`NOTE:
`
`IPRs may be declared to the Director-General or Chairman of the SDO, but not to the chairmen.
`
`Page 7 of 135
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`SAMSUNG 1034-0007
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`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`Approval of the agenda
`2
`R2-081400: Proposed agenda for RAN2 #61bis, Shenzhen, China, 31.03.-04.04.2008 RAN2 chairman
`=> Approved
`
`Schedule as it was finally carried out:
`
`2nd ad hoc room
`
`UMTS:
`AI 6.3.9, 6.4.1 (rest), 6.4.2 – 6.4.3
`
`UMTS:
`AI 6.4.4 – 6.4.11, 6.5
`
`Day
`Monday Morning
`before coffee break
`Monday Morning
`after coffee break
`Monday Afternoon
`
`Monday 17:45 ->
`
`Tuesday
`
`Wednesday
`
`Thursday
`
`Friday
`
`Main RAN2 room
`AI 1-3
`
`LTE: AI 4.1 (LSin)
`
`LTE: AI 4.3.1, 4.3.2 (partly)
`
`Joint UMTS/LTE on:
`Home eNB CR: 4.7.1 (partly),
`inter-RAT mobility: AI 4.10
`LTE: AI 4.3.2 (rest), 4.3.3, 4.3.4,
`L1/2 control in RRC: AI 4.4,
`Other (unicast): AI 4.5
`LTE UP:
`MAC: AI 5.1.1.1-5.1.1.5, 5.1.1.6 (partly)
`
`LTE UP:
`MAC: 5.1.1.7 (partly) , 5.1.1.8 (partly),
`RLC: 5.1.2, PDCP: 5.1.3,
`UE capabilities: 5.1.4
`
`Reporting LTE CP/UP
`Left-overs section 4
`Outgoing LTE liaisons
`
`1st ad hoc room
`UMTS:
`AI 6.0, 6.1, 6.2
`UMTS:
`AI 6.0, 6.1, 6.2
`UMTS:
`AI 6.3 (except 6.3.9)
`AI 6.4.1 (partly)
`
`LTE CP:
`RRC: AI 5.2.1.1,
`5.2.1.2
`LTE CP:
`RRC: AI 5.2.1.2
`(rest), 5.2.1.5,
`5.2.1.7 (just R2-
`081688)
`LTE CP:
`RRC: AI 5.2.1.3,
`5.2.1.4 (partly),
`5.2.1.6 (partly),
`5.2.1.8 (partly), cell
`selection: 5.2.2.3,
`5.2.2.5
`
`Not treated agenda items (AI):
`4.6 Broadcast services and subsections
`4.8 UE specific RRM information at handover
`4.9 SON (Self Optimising Networks)
`5.1.1.10 Other (unicast)
`5.2.1.8 Methodology
`5.2.2.2 Cell reselection
`
`No inputs were submitted to agenda items:
`4.2 Stage-2 status
`4.4.1 General (L1/2 control in RRC)
`4.4.4 RLC (L1/2 control in RRC)
`5.1.1.9 RRC configurable parameters
`5.1.2.2 RLC header formats
`5.1.4.1 Status (of UE capabilities)
`5.1.5 Model of the physical layer (36.302) and subsections
`5.2.2.1 Status (of Cell selection & re-selection (36.304))
`5.2.2.4 Speed Dependant Cell Reselection
`
`3
`
`Minutes of the previous meeting/reporting from other
`meetings
`R2-081401: Draft report of RAN2 #61, Sorrento, Italy, 11-15.02.2008ETSI MCC
`
`Page 8 of 135
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`SAMSUNG 1034-0008
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`
`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`=> Comments to be raised before Friday of RAN2 meeting #61bis.
`Revised in R2-081441 to include some review comments.
`
`R2-081441 Updated draft report of RAN2 #61, Sorrento, Italy, 11-15.02.2008 ETSI MCC
`Contents agreed. Revised in R2-081445 to provide final version.
`
`R2-081445
`
`Final report of RAN2 #61, Sorrento, Italy, 11-15.02.2008ETSI MCC Report
`Agreed.
`
`Chairman's report from TSG-RAN#39:
`CR’s
`
`RAN2 CRs for RAN #39 approved except:
`-
`25.999 company CR replaced the original CR
`-
`36.321, 36.331: company CRs (contention resolution) replaced original RAN2 CRs
`- DOB: CRs were rejected by voting
`
`UMTS:
`Three new WI’s with RAN2 as 1st responsible:
`- WI: HSPA VoIP to WCDMA/GSM CS continuity (RP-080229) Approved
`- WI: HS-DSCH Serving Cell Change Enhancements (RP-080227) Approved
`- WI: Support of UTRA HNB (RP-080159). In principle agreed.
`RAN2 should review the WI-sheet, and restrict the objectives to a set for which
`
`completion in Rel-8 timeframe can be reasonably expected.
`
`LTE:
`
`-
`-
`-
`
`No change in time plan for RAN2
`Not unnecessary re-open agreements; focus on closing open issues
`“Option pruning”
`
`Chairman's report from TSG-SA#39:
`- MBMS was removed from Rel-8 (see SP-080218)
`- SA requests the opinion of RAN2 how to handle ETWS in Rel-8 given absence of MBMS (See SP-080223)
`- Home-NB/Home-eNB:
`SA agreed on a CR in SP-080188. RAN2 is requested to review this CR and see whether it causes any
`problems from RAN2 point of view. If we have any concerns, we should liaise with CT1 and CT1 can originate
`an additional CR on 22.011.
`
`Other:
`-
`
`If no concerns are raised before the end of the meeting, intention is to abandon following 2 TR’s:
`25.819 Rel-7 "7.68 Mcps TDD option: Layer 2 and 3 protocol aspects" v1.0.0
`
`VHCRTDD: Layer 2 and layer 3 protocol aspects
`30.301 Rel-7 "3.84 Mcps TDD enhanced uplink: RAN WG2 Stage 2 decisions" v0.2.0
`RP-30: eventually to be merged into 25,309.
`See agenda item "9 Any other business" for the decision.
`
`
`
`4
`
`LTE General
`
`Under this agenda item we discuss Stage-2 issues, and also issues that are too general (e.g. impacting multiple protocols) or important (e.g. major
`impact on other groups) to be discussed in the CP / UP sessions separately.
`
`Incoming LS to LTE
`4.1
`R2-081412: Reply LS to R2-080609 and R2-081363 on various aspects related to GERAN to E-UTRAN
`interworking (GP-080395; to: RAN2, RAN4; cc: -; contact: NSN) GERAN - RAN2 action
`requested
`- Two questions to us:
`Priority algorithm mandated for UMTS/GERAN-only mobile ? => We see no problem
`
`from our side to mandate this.
`Predefined / default configurations; see what we can decide this week.
`
`
`
`Page 9 of 135
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`SAMSUNG 1034-0009
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`Report of TSG RAN WG2 #61bis, Shenzhen, China, March 31 – April 4, 2008
`
`=> Response in R2-081926
`
`R2-081411: LS on Equal priority Inter-RAT reselection - (GP-080298; to: RAN2; cc: -; contact: NSN)
`GERAN - RAN2 action requested
`=> There are contributions. Can sent response after that discussion in R2-081927
`
`R2-081413: Reply LS to R2-075478 on CSG related mobility (stage 2 text) - (GP-080417; to: SA1, RAN2;
`cc: SA2, RAN3, RAN4, RAN1; contact: NSN) GERAN - RAN2 action requested
`=> There are contributions. Can sent response after that discussion in R2-081928
`
`R2-081403: LS on Release 8 non-essential SAE features (SP-080218; to: CT1, CT3, CT4, CT6, RAN1,
`RAN2, RAN3, RAN4, SA1, SA2, SA3, SA4, SA5, CT, GERAN, RAN; cc: -; contact: Ericsson)
`SA no explicit RAN2 action requested - Janne Peisa (Ericsson)
`=> Noted
`
`R2-081404: LS on Decision of MBMS and LCS in SAE Rel8 Scope Discussions (SP-080223; to: SA2,
`RAN1, RAN2, RAN3; cc: SA1, GERAN2; contact: NTT) SA - RAN2 action requested -
`presented by Mikio Iwamura (NTT)
`=> There are contributions on the ETWS. Can sent response after discussion in R2-081929
`
`R2-081405: Reply LS to S2-075874 on Earthquake and Tsunami Warning System - (G2-080112; to: SA2,
`SA1, GERAN, GERAN1; cc: RAN2, RAN3, CT1, SA3; contact: Telecom Italia) GERAN2 - no
`RAN2 action requested - presented by Andrea Buldorini (Telecom Italia)
`=> Noted
`
`R2-081406: Reply LS to G2-080112 and S2-075874 on ETWS (GP-080410; to:SA1, SA2; cc: RAN2,
`RAN3, CT1, SA3; contact: Vodafone) GERAN - no RAN2 action requested - presented by
`Assen Golaup (Vodafone)
`=> Noted
`
`R2-081407: Reply LS to S2-075847 on Earthquake and Tsunami Warning System - (R3-080541; to: SA2,
`RAN2; cc: SA1, GERAN2; contact: NTT) RAN3 - RAN2 action requested - presented by
`Mikio Iwamura (NTT)
`=> Response can be included in R2-081929; Noted
`
`R2-081916: Reply LS to SA2 to S2-075875 regarding ETWS Security (S3-080219; to: SA2; cc: RAN2,
`RAN3, GERAN2, CT1, SA1; contact: NTT) SA3 - no RAN2 action requested - presented by
`Mikio Iwamura (NTT)
`=> Noted (primary notification could be several hundreds of bits)
`
`R2-081409: LS to establish working assumptions for the scope of responsibility for optimized handover
`specification (C1-080779; to: RAN2, RAN3, CT4, SA2; cc: -; contact: ALU) CT1 - RAN2 action
`requested - presented by Sudeep Palat (Alcatel-Lucent)
`-
`Does not seem to be our area of expertise. Main input should come from SA2.
`=> Noted without response.
`
`R2-081410: EPS Session management procedure optimisations - (C1-080780; to: RAN2, RAN3, CT4; cc: -
`; contact: Ericsson) CT1 - RAN2 action requested - presented by Vera Vukajlovic (Ericsson)
`-
`ALU thinks this is related to general aspect on NAS/AS interaction.
`-
`Currently we don’t allow to transfer multiple NAS msgs in one RRC message.
`-
`Samsung wonders if there is any difference if the NAS messages are transported in
`different RRC msgs: they might still end up in one TTI. Mot agrees that for the general
`case they should not be concerned. However Mot assumes this is specifically about the
`NAS concatenation with AS procedures (multiple RB establishment).
`Can have response LS after NAS/AS interaction discussion in CP-session R2-
`
`=>
`081930
`
`R2-081414: LS on Change Request for LTE TDD Frame Structure to TS.36.300 V8.3.0 - (R1-081112; to:
`RAN2; cc: -; contact: RITT) RAN1 - RAN2 action request